HEIDENHAIN SW 54843x-03 DIN Programming - Manual (Page 241)

HEIDENHAIN MANUALplus 620, CNC PILOT 640 241
4.8 Lat
er
al surf
ace cont
ours
Circular arc in lateral surface contour G112/
G113-Geo
G112/G113 defines a circular arc in a lateral-surface contour. Direction
of rotation: See help graphic
Parameters
Z
End point
C End point (end angle or polar angle)
CY End point as linear value; reference: unrolled reference
diameter
R Radius
K Center point in Z direction
J Angle of the center point as a linear value
Q Point of intersection. End point if the circular arc intersects a line
segment or another circular arc (default: 0):
 0: Near point of intersection
 1: Far point of intersection
BR Chamfer/rounding. Defines the transition to the next contour
element. When entering a chamfer/rounding, program the
theoretical end point.
 No input: Tangential transition
 BR=0: No tangential transition
 BR>0: Radius of rounding
 BR<0: Width of chamfer
PZ End point (polar radius)
W Center point (polar angle; reference: workpiece zero point)
PM Center point (polar radius; reference: workpiece zero point)
AR
Starting angle (tangential angle to rotary axis)
AN End angle (tangential angle to rotary axis)
Programming
 Z, CY: Absolute, incremental, modal or "?"
 C: Absolute, incremental or modal
 K, J: Absolute or incremental
 PZ, W, PM: Absolute or incremental
 ARi: Angle to the previous element
 ANi: Angle to the subsequent element
 Program either Z and C or Z and CY, and either K and W
or K and J
 Program either center or radius
 For radius: Only arcs <= 180° are possible